[It's up to the first poster to come up with a set up, and then each following post will either complete it or fill in the blank(s). And, as always, whoever posts the set up is certainly allowed to post their own completion/fill in as a follow up.]
Complete this phrase: "Suddenly it occurred to Maggie that rather than panicking over being trapped in the room in the secret passageway, she should use her time there (to)(as)...!!"